I don't know what you have for your Font Setting, but in my browser, all of the words overlap (Especially where you have Bold Face above small print text.)
Grab a style sheet from somewhere and apply it so that your buttons are buttons and your sidebar menu picks are highlighted and separated.
I understand the concept of a scroll box within a page, but if you do that, the page needs to load completely without requiring any scolling to reach the bottom. When you open the DIY parts page and try to scroll down, the browser can't tell whether you want to scroll the box or the page and jumps around between the two. It would be better to have the DIY parts classified and broken up into page size lists.
The forums and reviews pages are blank. If you don't have content, remove the links until you know what to put there.
You should underline hyperlinks or put them in text with color highlighting so that people know where they are supposed to click.
Resize the video images and put them in frames (drop shadow) so that they look more professional.
BTW, love what you have for sale...
@ "Smart enough to use a e-cig... not to get away from IE."
